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J. JOHNSON.

No. 68,205. Patented Aug. 27, 1867.

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JULIUS JONSON, OF BALTIMORE, MARYLAND, ASSIGNOR T0 GUSTAVUS JONSON AND H: L. FRANK, OFSAME PLACE. Letters Patent .No. 68,205, dated August 27, 1867.

Earsovsnsnr TIN MAGNETIC MACHINE FOltiSlfilgRATlNG IRON FROM BRASS resumes AND TO ALL IT MAY CONCERN:

Be it known, that I, JULIUS Jonson, of the city and county of Baltimore, and Statcof Maryland, have invented a new and improved Machine for Cleaning Brass Turnings and Filings; and I do hereby declare the I following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, and in which Figure 1 represents a top view oi'my invent-ionf Figure 2 represents a longitudinal vertical section of the some.

Figure 3 shows a horizontal section of the same.

Similar letters of reference indicate corrgsponding parts in the several figures.

In this invention the iron turniy'igs are separated from the brass by means of revolving magnets. In all large machine-shops a great deal of valuable brass is lost by being mixed, in the shape of chips, shavings. filings, &c., with scraps or filings of iron, so that it is almost impossible to separate them. Small magnets are sometimes employed by hand for the pnrpose,'but this process is slow and its work necessarily imperfect. I have previously patented a machine for accomplishing the purpose much more expeditiously andheeonomically. This invention is designed to accomplish the same result, but in a more perfect manner.

In order that others skilled in the art to which my invention appertains may be enabled to make and use the same, I will proceed to describe it in detail.

' In the drawings, A Arepresent the frame of the machine. Bis a revolving cylinder, having journals bearing in boxes in the sides of the frame, and its shaft terminating at one extremity in the cog-wheel b and crank 12', and at the other extremity in the cog-wheel II. C is a revolving brush, on a shaft which receives. motion from the cylinder-shaft B by means of a small pinion, 0, working in the cog-wheel b. The brush is so situated that when the cylinder- B and brush 0 are put in motion by power appliedthe crank b, it sweeps the surface of the cylinder and removes all dust or other matter that may have collecbed thereon. Under and in the rear of the cylinder, working on rollers 01 d, is thc endless apron 1), extending from the rear side of the hopper or feed-box E to a point a little forward of the centre of the cylinder B, and put in motion by the pinion wheel d and idler 12?, working in the cog-wheel 6" attached to the cylinder-shaft. The hopper E is placed over the end of the apron D, and its front side e comes down very close to the apron, leaving just space enough between for thc proper amount of filings or turuings to be regularly carried from the hopper to the cylinder upon the apron. The side 0 is made to slide vertically, for convenience in cleaning the machine, and th adapt the hopper to the different sizes of material that may be used. Guards e e along the edges of the apron, and

fitting closely down upon it, are provided, to keep the turnings from falling off the sides of the apron or wedgingbetween it and the frame.- A flat table orbed, E,'is stationed within the revolving-apron, for the purpose of supporting it with its load of turnings during the operation of theqmachino. F F are set-scrows-, which regulate the'tension of the apron I), being connected with the-journal-boxes of its rear roller d. The cylinder B is hollow, having a central shaft. Attached to this shaft are sets of electric helices G G, connected with magnets H H'cn the surfaccof'the cylinder, arranged in parallel rows along its entire length, one helix to each magnet. The magnets are constructed with rectangular or parallelepiped faces, and are inclined obliquely across their direction of revolution, so that while there are wide spaces between them they together sweep over the whole surface occupied by the filings on the apron beneath them, and come in contact with every particle of metallic dust upon that surface. '1 incline the faces of each series or row of magnets in opposite directions to those of the'row next preceding and following it, by which the filings are agitated thoroughly, first being thrown in one direction and-then in the other, so as to bring all the chips or dust in contact with the magnets. All the helices of each set are connected by wiresg g, and the magnets are connected by the bar upon which they are supported. The ends of the cylinder are of dry wood or other non-conducting substance. Between the frame A and one end of the cylinder-is a circular plate, 0, of some conducting material, such as brass or iron, which is connected. with one pole of the battery by the rod 1," and wire 2. Between the opposite end of the cylinder and the frame A is another circular plate, P, made in two parts, one a semicircle, p, of high conducting power, and.

spout M and be discharged. The brass turnings, not bein cage;

the other msemir-ircie, p, ofs oine non-conducting materiel. The conducting semicircle is put in conimunicn'tion with the -other' pole'of the battery by the rod K and wne K. Arms of brass or other conducting substance,

Zjl", project through the-wooden ended the cylinder so as to nearly or quite touch the circular plates .0 P. and

are connected with each other and with the helices G G by means of the wires g g.'

In an apparatus of this con auction the electric circuit is complete from the wire K to the wire only when the arm I is opposite to the conducting semicircle y, and is broken when the urn} Z' is opposite to the other semicircle, p. The circuit is therefore broken once andrcompleted once in every'revolution of the cylinder B. The magnets H H eye therefore rendered powerfully active once each during such-revolution, and during the remainder of the revolution are deprived of their magnetism. The point at which they receive the magnetism is arranged so that they shall become active just as they reach the brass and iron turnings inoving towards the cylinder on the apron D, and shall continue active until they nearly reach the brush C. Asthey become magnetized, all the iron among the mess mcving on'the apron will adhere to them', and'be carried around almost to the brush, when, as the magnets lose their power by the stoppage of the electric current, they will drop into the g attracted by the magnets, trill pass along with the apron D, and be delivered from it into the side spout N.

Having thusdescribed my invention, what I claim as new, and 'iiesire to secure by Letters Patent, is'- 1. The arrangement of the helices G G, magnets H'H, wires g g and rot ls i K, in connection with the plate 0 and the plate P, substantially as and for the purpose descrilied. v

i 2. I cleim the-arrangement of the magnets H H, with their feces in a position inclined. obliquely across their iiirecgionpt' revolution, substantially as and for the purpose specified. 1

v JULIUS JONSON.

Witnesses:

H. L. FRANK, Jos. T. Jamison. 

